Home / 289,851,491.40-434,777,237.10-198,018,486.60

Finding the Fourth Proportional to 289,851,491.40, 434,777,237.10 and 198,018,486.60

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Solution

The fourth proportional to 289,851,491.40, 434,777,237.10 and 198,018,486.60 is: 297,027,729.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,851,491.40 : 434,777,237.10 = 198,018,486.60 : x
  2. Step 2: Convert to fraction form
    289,851,491.40/434,777,237.10 = 198,018,486.60/x
  3. Step 3: Cross multiply
    289,851,491.40x = 434,777,237.10 × 198,018,486.60
  4. Step 4: Simplify right side
    289,851,491.40x = 86,093,930,498,671,376
  5. Step 5: Solve for x
    x = 86,093,930,498,671,376/289,851,491.40
  6. Step 6: Final answer
    x = 297,027,729.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.